diff --git a/docker/osm-nushell-krm-functions/krm/mod.nu b/docker/osm-nushell-krm-functions/krm/mod.nu
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+++ b/docker/osm-nushell-krm-functions/krm/mod.nu
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+#######################################################################################
+# Copyright ETSI Contributors and Others.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#######################################################################################
+
+# Meta-module of helper functions to manage, transform and generate specifications of Kubernetes resources.
+# This meta-module comprises all the modules of the OSM's SDK for App Modelling.
+
+
+# Import submodules
+export module ./keypair.nu
+export module ./concatenate.nu
+export module ./convert.nu
+export module ./generator.nu
+export module ./patch.nu
+export module ./jsonpatch.nu
+export module ./strategicmergepatch.nu
+export module ./overlaypatch.nu
+
+
+# Convert input string to a safe name for Kubernetes resources
+export def "safe resource name" [input: string]: [
+    nothing -> string
+] {
+    $input
+    | str downcase
+    | str replace -a './' ''
+    | str replace -a '.' '-'
+    | str replace -a '/' '-'
+    | str replace -a '_' '-'
+    | str replace -a ' ' '-'
+    | str replace -a ':' '-'
+}
+
+export alias safe_name = safe resource name